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Re: P120F Fuel Pressure Regulator Excessive Variation
Posted to HD/Fleet Forum on 2/16/2019 2 Replies

Yes, the pump passed the vacuum test, but it also passed it with the line plugged. It wouldn't pull more than 4 inhg, which to me says it's not capable of pulling enough fuel from the tank, leading to the loss of pressure to the high pressure pump. But if that... Login to read more.

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